riotpiao.com/tasks/4.9-structured-logging.md

4.9 — Log rejected /api/exec input (GREEN)

Phase: 4 — Terminal (Surface C) Stage: GREEN

• Every rejected /api/exec input logged (server console)

Done — console.warn on every reject branch in app/api/exec/route.ts. Mock only: plain console output, not the structured/shipped logging pipeline a real backend needs — see REQUIREMENTS.md.